Acknowledgments
This review project was carried out as an activity of the New England Space Science Initiative in
Education (NESSIE), which is charged with assisting NASA’s educational product developers in creating
appropriate instructional materials. NESSIE is a collaborative project of the Museum of Science, Boston,
the Smithsonian Astrophysical Observatory, and Tufts University, with support from NASA’s Science
Mission Directorate. Any opinions, findings, conclusions, or recommendations expressed in this study are
those of the authors and do not necessarily reflect the views of the sponsor.